Back to results
US 4,792,168 AGranted
Patio door block
AssigneeNone recorded
InventorRobert Kardosh
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNone recorded
InventorRobert Kardosh
Estimating the term…
An adjustable safety block assembly is disclosed which can be used to traverse an opening for a sliding door in order to block it. The assembly consists of inner and outer tubular members which can be telescoped together. One of the tubular members has a series of axially extending rows of holes spaced at even intervals, and staggered around the radius of the two. The other tubular member has groups of evenly axially spaced circumferentially distributed holes radially arranged. The tubular members may be telescoped until the desired length is achieved, and then holes of the inner and outer tubular members aligned so that locking means can be inserted through the aligned holes to fix the tubular members in relative position, to form a rigid bar. Thus, the safety block is easily adjustable to accommodate any patio door widths, and may be disassembled for storage and travel.
An adjustable safety block assembly for traversing an opening for a sliding door, comprising:
A method for assembling a safety block having a first tubular member having a first series of circumferentially distributed axially extending rows of holes circumscribing its tube wall, the holes of the first series being spaced in uniform intervals from axially adjacent holes and being axially staggered in uniform intervals relative to circumferentially adjacent holes, and a second tubular member adapted to engage the first tubular member in sliding telescopic relation and having a second series of circumferentially evenly distributed holes, the holes of the second series being axially staggered relative to circumferentially adjacent holes in uniform intervals equal to the fraction obtained by dividing the length of the interval of axial staggering of holes of the first series by the number of holes in the second series, comprising the steps of:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
For sliding wings: locking bars
Closure fasteners: sliding door fasteners
Closure fasteners: portable
Braces: portable
Term ended 24 Apr 2007 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to an adjustable safety block which can be used for blocking the opening of a sliding door, such as a patio door. The invention also relates to a method for assembling tee safety block to a desired length for traversing the width of the opening of any size of sliding doors.
Sliding patio doors are generally constructed with light aluminum frames so that the door may be easily opened and closed without requiring substantial physical strength. One disadvantage of such a construction is that repeated rough handling often destroys the locking mechanism of the door through deformation or severing of the portion of the frame intended to be engaged by the locking bolt.
Repairing the locking mechanism is often costly, since replacement of the entire door frame may be required.
FIG. 1 is a perspective view of an assembled safety block being wedged into the opening path of a sliding door.
FIG. 2 is a perspective view of the disassembled elements of the safety block.
FIGS. 3 and 5 are perspective views of a section of the inner and outer tubular member, respectively.
As show in FIG. 2, a safety block 1, according to the invention, is constructed of two tubular members, an inner tubular member 2 an outer tubular member 3. As can be seen from FIG. 1, the inner tubular member 2 may be inserted into the outer tubular member 3 in sliding telescopic arrangement.
Caps 4 and 5 are mounted over the respective free ends of the tubular members 2 and 3. Each cap is formed with a groove 6 extending the length of the cap bottom. Preferably the groove 6 is off-centre, and toward an opposite side on each cap, so that the caps present the grooves in aligned mirror image when facing each other mounted at opposite ends of the assembled safety block 1.
After the inner tubular member 2 has been inserted into the outer tubular member 3, and in order to adjust the length of the safety block 1 to fit a particular sliding door assembly 20, the inner tubular member 2 is telescopically slid in and out of the outer tubular member 3 until the desired length is achieved. The desired length should be sufficient to horizontally traverse the opening path 21 for the sliding door 22.